Siphon head



Sept. 29, 1936. M. J. BROWN sIPHoN HEAD Filed .March 9; 1935 I fDvI\./lun n v lNvENToR Patented Sept. 29, 1936 UNITED STA-Tes PATENT oFFlcE i 2",jl`55,4t i i" f -v l siPHoNHEAiJ f i Moiiiiiiiiinitiiiiniais i Application Maren 9, 1935 serial nu loii i is ii iii-ii n i This invention relates to siphon heads such as are used on siphon -bottlesfor Serving carbonated beverages; etes and has for its object to provide an improved siphon l'iead with means for efficienti 1y discharging the carbonated liquid and con trolling the pressure in the vessel to which the head is applied.

Another object of the invention. is to provide a Siphon, headwhich combines, in a single compact strlilcturei means forcontrolling the admission of gasto a vessel to' carbonate the liquid contents; a positive acting safety valve .adapted to `function automatically to relieve excess pressure within v the vessel, a control member for operating said valve at will to discharge the carbonated liquid Without vtransmitting the friction of said member to the valve itself; and means controlled by said vValve for discharging the carbonated liquid with Inin'imumdisturbance so as to reduce' the loss of 29 gagasthe liquidpasses from the high pressure vesselwto atmosphericpressurein the drinking glass'. i .y

'iiphn bottlesare often subjected to pressures which are not adequately controlled andas here-` tore constructedhave never been very widely used because notaltggether s afe or as eilicient as they should beal Attempts have been made to provide Vsafety valves for relieving excess pressure i'r'lsich bottles but these have been objectionable 39 becasefmsublject to ,corrosion and sticking; nespeciallyaf-ter long periods oflinactivity. Discharge valves of the Atypel heretofore employed tof control the lldw of liquid in s iphon `bottles would be of little Mor no luse as safety valves because of the` eim'cessivefrict'ion and inertia ofthe manual op`V era'itingA mechanisms and the dilculty of operat-` ing same byA pressure o fthe gas Within the bottle. `nmyV siphon head I overcome these diiicl'lltiesA byplbiing a safety valve and a liquid control 494 valve in one andthesame structuregwhich is necessarily operatedwhenever the siphon is used and due Ato such constant use is kept in prime operating condition at all tin-ies.V Furthermore the valve as constructed in accordancewlth my i inventionhas; toa dependable degree, the char-Y acteristics of a frictionlesssystemand is disasso,I

ciatedjrom the manu-al1operatingmechanism so thatitmayube delicately balanced and adjusted to operate at any desired pressure Without regard '4 to the friction or inertia of sai-dv operating mech-i,V

amsm- A; further importantfeature of my Siphon head resides in theprovision of improved means` for controllingfthe admission of gasto the bottle or vesselto carbonate the liquid contents as-rec1uiredi` one 'adtariiagebi this iiiiiiiaien is fait ii lief; mits tn Iiiii t5 be charged shortly beo'e itis to ne' ils'd; it tvitii br ivitiibit the' addition if ite to the vessel, thus insuringa 'fresh l charged and coole-i it the tastof tri iiiaiv'ial. siill another' 'feature of theinveiitiri resides in ariv'el ctiisiiueiioii aiiii eqiiibiiiaiiii of iiiiig'vilifa nozzle ana associated baits iivhiiyin liquid when traveling at iiiaximuiii vleitiis sfp'raiiiii a rapidly iii-living nlm on snifiiiiii braking sur: lilit face Withtu'rbulenc (s`as to prolong its" period of oveisaiuiatiiiaiiucorrespondingly eiiiiaiie the character and taste of the beverage:

These aiijd einer features' and fi-avantages; bf th' iiiventioii will be described ifi 'coniitioii with 1B* the' dcmpaiyiilgdiciwirig,V willen; I Fig. 1 is a longitudinal section through a Siphon bottle: and head embodying ilie iiiviiiioii; Fig. 2 is an iili'ged dtail seiioii taken on lirle z 2 of Fig. 1; mju i l Fig.- 3 is :i biblier'i longitudinal siioii illustraririg'a inofaiaiiii or the iiiviiiioil.M Referring tof Figsiiaiid auf the drawing; l is' siplipii head having eiiiiiilaportioiiz 'which iiii'rnally' threaded so that it mai Be scewd'ii 23x. iiliiecli ff s bdiil 3 oiriy 'suitable' type. in aiiiiulai gasket l is clali'ipilbiiiii ine heidl l and the' iiioiitn of the bottle; and i'is diifiing ridge 5 for centering purposes; 'i i ciently to permit the valve |72 to close under the trol member I 9 having an actuating knob or handle 20. In the form shown in Fig. 1, member I9 is threaded in a bushing 2| which, in turn, is screwed into the rear end of the siphon head in alignment with the chamber 1. The forward end 22 of said member I9 is reduced in diameter and projects Vinto the rear portion Il' of chamber 1 adjacent and in alignment with the head I6 of the valve stem, passing through a packing gland 23 of cork or other suitable materialwhich is clamped between' :the innerlend ofbushing ZIVandthe adjacent inner'wall'of the 'siphon head. The parts are preferably so arranged, and the pitch of the.`

cooperating threads on control member I9 and bushing 2| so proportioned, that rotation of knob turning knob 2U a like distance inthe Vopposite direction the member |9 will be .withdrawn suiiitensionlof spring I8. Y A. Y y

From the foregoing it will be observed that the valve stem I3, star guides I5, head Ivof the valve stem, chamber I1 and control member I9 are all centeredlonthe same axis. The face'of valve I2V is true to a plane which is perpendicular. to said axis, as isalso lthe lsurface'with which the face of va1ve I2 engages. The purpose of this construction is to reduce lateral movement of theV valve ystern to a minimum,A thereby keeping the cooperating faces of the valve parallel with a minimum of frictional resistance at the guides I5 and I 1. In this arrangement it will also be noted that the valve I2 and its actuating member 20 are at atmospheric pressure outsidetthe siphon head and that only the reduced Vend'22 of the actuating member projects through packing gland 23 into the highpressure chamber of the head. All screw threads are outside the liquid-tight packing gland, hence itis possible to employ a push rod 22 which is'small andaccurately guided, and it is likewise easy to maintain a liquid-tight packing. The

extension or push, rod 22Vof the actuating mech- Vides tubulartting or nippleliwhich is Screwed,V ntothe Side of. the Siphon head and has its outer.;

anism ispreferably Smooth or polishedand carefully rounded, which facilitates the smooth working of the valve mechanism.

. F91 Charging the .Contents-ofthe bottle 3 proendthreaded for cennetionwtq a tank or other source of carboni dioxide .gasa Within said nip-I ple 24 seqnefwervalve. 250i the type employed in bicycle and other pneumatictires, Athe purpose of said valvebeing to admit carbon dioxidey gas to the siphon head and bottle while preventing same from passing o ut through said Valve in thereverse direction.

A One Y,important portablensiphon bottles of the typepemployed for serving carbonated water, soft drinks, etc. at picnics and 'the like. AVTo insure a fresh cold drink without prolonged packingin-ice or storing in a refrigerator, the water is pouredA into the bottle together withY cracked ice, the siphon head `is screwed on and the nipple 24 of the head is connected toa tank orother source of carbon dioxide gas vunder vpressure the lconnection preferably' 'being through- -a pressure control valve which holds the pressure constant. y When lthe water isfsuic'ientlycharged the gas. supply is discon-1 nected and therfreshly. carbonated water is ready ffl?? 1,1561: ThehargingrQoursaimay; take place V#1,956,143 0f April 24, 1934.

use-of siphon'head is oriV either before or after the water has been chilled, although there is an advantage in charging the water after chilling since water dissolves more carbon dioxide when cold.

In order to discharge the carbonated water it is Simply necessary to turn the knob 20 to open valve I2 as previously described, causing the water'to issue through Siphon tube 6, chamber 1, valve opening IIJ and nozzle 8. In the form shown, the carbonated vwater is delivered with minimum turbulence and loss( of gas in accordance with the principle disclosed in vmyPatent To this end the chamber I serves to quiet the liquid stream isv'.su'i'ng'ffrom the tube 6 while the inner face of 2|! for a fraction of a turn will cause the forward end 22 of said control member Il'toengagetheY head I6 of valve stem- I3 and force said valve stem toward the left in Fig. l so as to move valve I2 off its seat against the tension of spring-I8. v Bye' entire discharge path thusv constituting a con-V tinuousv annular orifice without any obstructionV which would Vcause eddies, or break or deflect the stream. In this way the outgoing liquid is held in continuous contact with the brak ing surface from the time and point it enters the opening I0 until its velocity is substantially re-` duced, avoiding all air gaps, impacts, turbulence, or mixingof previously discharged liquid with freshly discharged liquid, and thereby prolonging the period of oversaturation of the liquid at reduced pressure.

. An important advantage of my siphon head is that the valve I2, in addition to'controlling the normal discharge of liquid, also serves as a safety valve for relieving excess pressure at any time .and at anyneeded rate. Theoretically a safetyvvalve should open whenever a stated pressure is reached, but practically it is known that when safety valves are inactive for long periods of time they ltend, because of corrosion, friction` and sticking, to become sluggish and require more than the rated pressure to open them. This is particularly true in the case of a siphon bottle which isrsubject to the corrosive and contaminating action 'ofrnany kinds Vof Water solutions. I avoidthis tendency toV corrosion and sticking by operating the safety valve I2 every time the Siphon is used, and by properly tensioning ythe spring I8 I enable the valve to open at any pre-- determined pressure. Another important advantage of my valve system is that the positive opening and closing of valve I2 is accomplished with minimum friction in thev valve itself since thev friction and intertia of the manual control member v| Sand associated parts are effectively isolated from the valve I2. A further advantage of the construction illustrated in Fig. l is that it is possible, simply by pressing the stem of valve 25, to bleed voff the gas pressurein the bottle without drawing water along with it.

In the-embodiment shownY in Fig. 3 the Siphon tube is lcarried by a disc-shaped gasket 4 which is clamped between the head I and the mouth ofthe bottle 3.' VThe'upper end ofV said tube 6 is connected to the'tubular oriicefchamf ber by passage 2'I. In this construction, furthermore, the rotatableV control member I9Y has a hollow shank in which the one-way valve 25 is mounted. In charging theV bottle of Fig. 3 the gas flowsY past valve v25 and through the shank of vcontrol member I9", chambers andl, passage'2l and tube 6 into. the bottle V3. It is unv derstood that the tensionof -spring |8'1is such as to hold thervalve l2 `tightly closed during the charging operation. In other respects the siphon headoi Fig. 3 is' the samein construction and operation as thatpreviously described.

Various other Vchangesmay alsobe made in the details of construction and mode-0f -application of my siphon head without departing from the scope and spirit ofthe invention as dened in the appended. claims.

The invention claimed is: n

1. A siphon head comprising a chamber to be supplied with liquid under pressure, a valve on the low pressure sideof lsaid chamber operable to relieve excess pressure therein, a stem in said chamber supporting said` valve, and a'rotatable operating member threaded in 'said head in alignment with said stemandmovable into and out of contacttherewith to actuate said valve.

2^. A siphonhead` comprisingxa chamber tofbe supplied with liquid under pressure, a .valve on the low pressure A-side` of said chamber operable to relieve-.excess `pressure therein, means acting to close said valve, a stem in said chamber supporting said valve, a' rotatable screw member threaded in said head adjacent and in alignment with the end of said stem, and means for rotating said member into and out of engagement with said stem to actuate said valve.

3. A siphon head comprising a chamber to be supplied with liquid under pressure and having an outlet forming a valve seat, a valve cooperating with said seat on the low pressure side of said chamber for relieving excess pressure therein, means acting to close said valve,'a stem in said chamber supporting said valve, a packing gland in said head adjacent said chamber in alignment with said stem, a rotatable screw mechanism threaded in said head on the low pressure side of said gland, a shank carried by said screw mechanism extending through said gland adjacent and in alignment with the end of said stem, and means for rotating said screw mechanism to move said shank into and out of engagement with said stem to actuate said valve.

4. A siphon head comprising a chamber having an outlet forming a valve seat and a passage for connection to a siphon tube to discharge liquid under pressure through said chamber, a valve cooperating with said seat on the low pressure side of said chamber for relieving excess pressure therein, means acting to close said valve, a stem in said chamber supporting said valve, an operating member having a hollow shank extending into said chamber in alignment with the end of said stem, means for moving said chamber into and out of engagement with said stem to actuate said valve, and means for admitting gas through said shank to said chamber.

5. A siphon head comprising a chamber having an outlet forming a valve seat and a passage for connection to a siphon tube to discharge liquid under pressure through said chamber, a valve cooperating with said seat on the low pressure side of said chamber, for relieving excess pressure therein, means acting to close said valve, a stem in said chamber supporting said valve, an operating member having a hollow shank extending into said chamber in alignment with the end of said stem, means for moving said member into and out of engagement with said stem to actuate said valve, means for connecting said member to a source of gas under pressure, and a valve in said shank controlling the admission of gas thereto.

6. A siphon head comprising a chamber having an outlet forminga valve seat and a passage for connection. to a siphon tubeto discharge liquid under pressure throughV said chamber, a valve cooperating with said seat on the low pressure side Aof said chamber for relieving excess pressure therein, means acting to close said valve, a stem in said chamber supporting said valve, a rotatable screwme`mber threaded in said head having a hollow shank extending into said chamber adjacent and in alignment with the end of said stem, means for rotating said screw, mechanism to move said shank into and out of engagement with said stem to actuate said valve, means for connecting said screw mechanism to a source ofV gas under pressure, and a valve in said shank controllingthe admission of gas thereto. a7. A siphon head comprising a chamber having an outlet forming avalveseat and a passage for connection toa siphon tube to discharge liquid under pressure, a valve cooperating with said seat on the low pressure side of said chamber acting as a brake on the outgoing liquid, and a continuous unbroken braking surface extending outwardly from said valve seat substantially parallel to the direction of dischargeto receive and hold the stream without impact or rebound until its velocity is substantially reduced.

8. A siphon head comprising a chamber having an outlet forming a valve seat and a passage for connection to a siphon tube to discharge liquid under pressure, a disc valve cooperating with said seat on the low pressure side of said chamber for braking and spreading the outgoing liquid in a thin annular nlm, and a continuous unbroken braking surface extending outwardly from said valve seat substantially parallel to the direction of discharge to receive and hold the stream without impact or rebound until its velocity is substantially reduced.

9. A siphon head comprising a chamber to be supplied with liquid under pressure, a valve on the low pressure side of said chamber operable to relieve excess pressure therein, a valve stem extending through the seat of said valve into said chamber, a spring coiled upon said valve stem under compression between the valve-seat and the head of said stem and acting to close said valve, an exclusively manually movable operating member carried by said siphon head on the opposite low pressure side of said chamber, a liquidtight packing between said operating member and said chamber, and a smooth extension on said operating member extending through said packing into said chamber in position to engage and actuate said valve stem.

10. A siphon head comprising a chamber to be supplied with liquid under pressure, a valve and valve seat having parallel engaging surfaces on the low pressure side of said chamber, a valve stem secured to said valve and extending into said chamber on an axis perpendicular to said valve surfaces, tensioning means in said chamber acting on said stem to close said valve and permitting same to open to relieve excess pressure in said chamber, an operating member extending into said chamber in alignment with said stem, exclusively manually operated means for moving said operating member into and out of engagement with said stem to actuate said valve, said last named means being free of said spring, and an extension of said valve seat forming a braking surface extending substantially parallel to the direction of discharge to receive and hold the '11. A siphon head comprising a chamber Yto be supplied with liquid under pressure, a valve for said chamber operable by, and adapted to relieve, excess pressuretherein, means for manually operating said-valve at will, and a smooth, continuous non-agitating braking surface disposed Afor reception of the liquid discharged through said valve and cooperating therewith to collect said liquid as a thin film in contact with said braking surface without impact or rebound for` delivery to a receiving vessel.

12. A Siphon head characterized by the elements combined and cooperating as set forth in 'claim 11, and further characterized by having said valve formed with a stem extending along the axis of operative movement of the valve, and by. having said manually operating means formed as a push-rod supported independently of said valve stem whereby said valve is free of said manually operable means whenoperated by excess pressure. Y

r13. A 'Siphon head characterized by the elements combined and cooperating as set forth in claim 11, and further characterized by having said valve formed with a stem and said manually operating means formed With'a push rod both in alignment with theaxis of operative movement Y of vsaid valve, said push rod having a reduced por-- tion working in a packing, and a relatively larger adjustment portion disposed on the low side of said packing.

14. A siphon head comprising a chamber maintained under highv pressure, a discharge valve therefor, operable bywand adapted to relieve excess pressure, a thrust member in said chamber adapted to operate said valve, and manual means to operate said thrust member, said valve being adapted to operate independently of said manual means.`

l5. A siphon head comprising a chamber maintained under high pressure, a discharge valve therefor, operable by and adapted to relieve excess pressure, a stem in said chamber supporting saidvalve, a manual operating member having a shank adjacent and in alignment with said stem for actuating the same, said valve being adapted to Voperate independently of said manual operating member.

MORTIMER J. BROWN. 

